does anyone have the reoccuring issue of the white dots appearing due to dmd chip failing regularily?
35312
I've bought a replacement chip which is an updated model from ebay. it is the 1280-6338B and can replace the older 1280-6038B 1280-6039B 1280-6138B 1280-6139B which have that issue. I've replaced my 6039 with the newer 6338 which is meant to eliminate that problem. I haven't used the new one for over a year, so I can't tell you if it's better. but looking good so far.
35313
I have had this unit for 3 years. I had been repaired once already. I currently do not see any white spots.
1436642
Yes! The DMD chip is bad (the DMD chip is the chip with the mirrors on it, and some are stuck). A few years back, Texas Instruments sold a batch of defective chips to Samsung and Mitsubishi. Mitsubishi has been replacing the chips free out of warranty, you only pay a $200 labor charge. It is definitely NOT the lamp. More info can be found here http://www.avsforum.com/t/1279379/the-defective-mitsubishi-dlp-tv-owners-thread/180
43727
Answering in August 2014 a q. from September 2013. They've improved the chip, and now have a universal one that works and has black lump (not a dot) on it. Black lump chip from them on the magenta thingy that had my Magicolor 1600w not working got it to work.
1504921
Yes, on my approx 5 year old SD870 Elph. Black spot grew from pinprick to 1/3 of the screen over about 6 months. Doesn't show up on pictures, but makes it hard to see what's on the screen. Screen is losing pixels or something.
1942950
Beth - did you end up having this fixed? Mine started having this problem also, but it doesn't seem very problematic....
281825
Have had my Mitsubishi 65638 for about 6 months no problems. A friend of my has the same. No white spots as well. Hope this helps!
1522805
If by "square clusters" you mean the individual fixtures with all of the LEDs in them, and not just groups of LEDs within a fixture or fixtures, then the chances are better that it's a bad connection to the affected fixture. It's VERY unlikely that ALL of the LEDs in a particular fixture would go bad at the same time. See if you can disconnect the defective fixture and do a continuity check on both ends of the connecting cable. You may be able to make an easy repair to the cable or connection. Other than that, I doubt that you can buy just a fixture to replace a defective one. These lights work great but are very cheaply built. If they last beyond the warranty period you shouldn't expect much more. I had a red/green laser display from the same manufacturer and when the red laser stopped working I called the manufacturer and was told that if the warranty had expired it would be cheaper to buy a new one than to repair the bad one. Luckily for me my problem was just a bad connection to the red laser.
826364
Have the same issue, followed procedure exactly several times. Looking for help too.
591054
Weird you posted this. Our kid had those spots from 13-16 months. They miraculously disappeared. It was very strange. We used 2-4 oz of this stuff daily. He is now 26 months and has super white teeth.
1877992
Did this happen after using glisten? If so that would be odd. If not, probably hard water, run glisten through the cycle, make sure the water in the dw is hot, then try a load of dishes. you should see improvement. I keep Jet dry in my dw too because I also have hard water, but haven't had the problem of white surface on my plates or glasses since I used glisten. I run this through my dw once a month.
1189203
In my experience, using this twice in the past couple of years, the chip is slightly visible after using, however, in a few days it is impossible to find where it was used
348125
Returning is likely your best option. I too ran into the white lines appearing in my scans, and multiple cleaning and calibration cycles didn't resolve the issue. It's a bummer too, I really wanted to like this product for it's fantastic ease-of-use.
1956350
optomausa did up the warranty to 3 years on one of the chips. Mine started coming with a bunch of white dots and they are fixing it right now under warranty.
2282457
I had the same problem. I noticed a small drip stain on the LED cover. Cleaned it with a little Windex on a rag. Now works perfectly.
2095479
I've had multiiple problems with this model. First I had the "white dot" problem. At first a few white dots show on the screen. Then every day there are more and more until the screen is a star field. The DLP chip had to be replaced to fix this. Then I had the problem you're describing. It wasn't the LED which lasts about 10 years (unlike the non-LED models which have a bulb that needs to be replaced every 3 years). It was either the motherboard or DMD board. I forget which, but I ended up paying $600 to have it fixed. It was out of warranty.
573568
I have installed 3 of these chips. They are not difficult and if you need help you can go to YouTube. Once installed your dlp will be just like new.
888232
The error is something I faced and wrote in my review of how to fix it. The problem is caused by miscontact with the reset board and the printer, which is mainly due to the plastic dots holding the board in place. If you feel the dots and notice one or more protruding, then just take a small file, or use your finger to scrape off the protruded plastic. After that, all should work fine.